血管内皮抑制素的研究进展

实体瘤当生长到一定的体积时必然伴随着血管生成。 1971年 ,Ｆｏｌｋｍａｎ[1] 最早提出肿瘤生长是血管依赖性的。他认为肿瘤血管生成是肿瘤生长和转移的形态学基础。它不仅向肿瘤提供充足的营养 ,同时也向机体输出肿瘤细胞 ,导致肿瘤细胞的恶性生长和转移。因此 ,Ｆｏｌｋｍａｎ[2 ] 提出抗血管疗法 ,设想抑制肿瘤血管生成 ,使肿瘤细胞因缺血、缺氧而大部分死亡 ,从而可延缓晚期肿瘤生长 ,延长病人带瘤生存期 ,并可抑制亚临床转移灶生长 ,推迟复发。这一设想为越来越多的证据所支持 ,并使这一领域成为肿瘤研究的热点及肿瘤治疗的新策略。人…

Advances in endostatin research

Endostatin, a 20 kD (184 aa) C-teminal fragment of collagenⅩⅧ, is the most potent inhibitor of tumor angiogenesis described so for. Endostatin was initially isolated from a murine hemangioendothelioma cell line (EOMA). Purified recombinant murine endostatin generated in E. coli bacteria injected as unfolded suspension, inhibited the growth of a varity of metastatic and primary tumors in mice. However, its widespread application has been hampered by difficulties in the large-scale production of the antiangiogenic proteins. The limitation may be resolved by in vivo delivery and expression of the antitangiogenic gene. This review summarized the advances in endostain research in recent years including structure, the mechanism of generating, function and therapy.